docs: def get_block(self, crypto, block_hash='', block_number='', latest=False):
          """
          Get block based on either block height, block number or get the latest
          block. Only one of the previous arguments must be passed on.
  
          Returned is a dictionary object with the following keys:
  
          * required fields:
  
          block_number - int
          size - size of block
          time - datetime object of when the block was made
          hash - str (must be all lowercase)
          tx_count - int, the number of transactions included in thi block.
  
          * optional fields:
  
          confirmations - int
          sent_value - total value moved from all included transactions
          total_fees - total amount of tx fees from all included transactions
          mining_difficulty - what the difficulty was when this block was made.
          merkle_root - str (lower case)
          previous_hash - str (lower case)
          next_hash - str (lower case) (or `None` of its the latest block)
          miner - name of miner that first relayed this block
          version - block version
          """
          raise NotImplementedError(
              self.name + " does not support getting getting block data. "
              "Or rather it has no defined 'get_block' method."
          )